photo we are studying for clues. a man acknowledging that he did not tell the truth. so, how far will he go in that interview? abc's neal karlinsky has been following armstrong for years and starts us off tonight. >> reporter: wearing a sports coat and looking calm, lance armstrong revised history, and admitted to oprah that he used performance enhancing drugs. >> i think the entire interview was difficult. i would say he did not come clean in the manner that i expected. >> reporter: it turns out he really was on more than just his bike. he's been accused of running up a doping bill investigators have pegged at more than $1 million. andy andy tauping officials describe a ghoulish list of medical enhancements -- blood transfusions, up to twice in three weeks during the tour, along with epo, testosterone, cortisone and an extract of calves blood called actovegin. ex-teammate floyd landis

described in an abc news exclusive, a cloak and dagger strategy that even involved injecting drugs hidden in the team bus on the side of the road. >> and the blood would be taped on the wall or hung up at a certain level above your head so that gravity caused it to run in your veins and then you leave. >> reporter: landis was attacked by armstrong for his admission and he wasn't alone. armstrong trashed anyone who accused him. former friend betsy andreu says she was in the hospital room when, during his fight against cancer, armstrong admitted performance enhancing drug use to his doctors. when she refused to lie about it, she says he lashed out, putting the brakes on her husband's career in cycling. >> it's bittersweet. there's been a lot of damage done to us, but at least the first step has been taken. >> reporter: those who know lance armstrong best say pictures of his face during competition tell you everything. ferocious and focused.

someone who planned meticulously and executes based on his own instinct. and that hasn't changed. lance armstrong may admit using drugs, but he also still sees himself as the champion. confession or not to oprah, officials are not satisfied. and lance armstrong still faces a lifetime ban. diane? >> a lifetime ban. so, what would it take to change that, neal? >> reporter: well, officials tell abc news that he is now in talks with them about coming forward, fully, confessing fully to officials, possibly testifying against others and if he does so, officials say, he could reduce that lifetime ban to eight years, which would put him back in competition right around the time he's about 49 or 50 years old. >> all right, neal karlinsky reporting in again tonight. thank you so much. and tomorrow, president obama will announce his action plan against gun violence in america. but today, new york governor andrew cuomo signed a law that is the toughest gun law in the nation right now and tried to tackle a very big question.

how do you keep guns out of the hands of the mentally ill? abc's senior justice correspondent pierre thomas tells us about the controversial idea. >> reporter: we've all seen the faces. young men accused of horrific mass shootings, looking unstable, believed to be mentally ill. they were ticking time bombs who sometimes had encounters with mental health professionals. could they have been stopped? today, new york state officials are leading the way, passing a new law they hope will block violent acts by the mentally ill. >> we must stop the madness and >> reporter: the new law would require mental health professionals to report to state officials any patient they deem to be a "significant risk" or "threat." this would stop mentally ill patients from buying weapons. no court order needed. >> this would be a sea change but potentially opens up a huge number of patients to the intrusion of the state having

their name, knowing that they're in treatment. >> reporter: the law might have made a difference in shootings at virginia tech and a colorado movie theater. in both cases, the young men received mental health counseling. but some doctors are worried this will destroy trust with patients. >> people who are concerned about their privacy may decide not even to come to treatment in the first place. people with mental illness account for a very small proportion of the violence that's committed. >> reporter: but victims of mass shootings want something done yesterday about the mentally it's act ill's access to guns. >> they all have a common thread and it's all two parts. mentally ill people with guns. come on. it's a three that combination. it's a lethal combination. >> reporter: the question now -- will america follow new york's lead? pierre thomas, abc news, washington. and we head next overseas to pakistan, a country so vital to the u.s. war on terror and home to an estimated 100 nuclear weapons. tonight, in turmoil.

tens of thousands swarming the streets, vowing to overthrow the government after an arrest warrant for pakistani's prime minister. and abc's muhammad lila was there, sending us a quick dispatch from the street. >> reporter: all night, protesters have been moving closer and closer to the country's parliament. all that separates them now from the heart of the government are those shipping containers. and from muhammad lila there in the middle of pakistan's demonstrations, we move the now, you see these pictures in syria. they are new pictures of the disaster in that long fight tonight. this was a university, classrooms, dormitories. after two explosions in the city of aleppo. more than 80 people killed. the government and the rebels are each blaming each other for the blasts. and we move on next to this nation, fighting the flu. and tonight, some new post cards from the front lines of america's epidemic.

now, even worrying countries overseas. you can see it here. look. passengers from chicago are arriving in south korea, being scanned by those thermal cameras for signs of fever. and we are also hearing of churches back home asking sick parishioners to refrain from shaking hands or drinking wine from the large chalice at communion. and more and more, the all-american high five is being replaced by the fist bump to contain the spread of the flu. and today, we learned that almost 70 million americans believe the flu shot will give them the flu. so, we asked abc's chief medical editor dr. richard besser to take a hard look and bring us back the truth. >> i actually have not gotten a flu shot. >> no, i haven't had the flu shot this year. >> i don't think i need it. >> i haven't had time. >> every time i get the flu shot, i get sick afterwards. >> someone needs to do a better job of convincing me to get the flu shot. >> i just think i'll get the flu

if i get the flu shot. >> reporter: 69 million other americans agree with her, thinking the flu shot will give them the flu. and right outside our abc offices -- how can you get the flu from the flu shot? >> that's what they say. >> reporter: how can the flu shot give you the flu? i'm trying to understand that. >> because it's a vaccine. and to make the vaccine, you have to put some of the, like, bacteria in it -- >> you have to put the virus in it. >> reporter: i see the confusion. but let me set all 69 million of you straight. getting the flu vaccine does not give you the flu. think of the shot as a video game. the shot is made of parts of three dead flu viruses. dead. not whole viruses. they don't work, they can't give you the flu. your immune system studies those virus parts, sees how they're made and in about two weeks, builds weapons, antibodies, that will fight the live version of that virus. and if you breathe in those strains of live flu, you'll have some immune system weapons that shoot that virus down. did you get your flu shot this year? >> no. >> no. >> not this year.

>> reporter: you might want to think again. >> out on the street tonight, dr. richard besser is here. so, rich, you swear, you say it cannot give you the flu. but afterwards, if you feel that soreness, a little ache, sometimes a tiny bit of fever, it is -- >> reporter: you know, you can feel those. and it's your body reacting. it's building those antibodies. so, what i tell my patients, if you feel that sore arm and that fever, it's going to work even better for you. that can give you some comfort. >> the more you're feeling, the more you're building up antibodies. >> reporter: your body is reacting to that vaccine. >> okay, night after night, you've been saying to me, it's not too late to get the flu shot. is tonight the night it's too late, or -- >> reporter: you look all around america and people are still seeing the flu. as long as you are seeing the flu, it's still out there, there's time to be protected. maybe six weeks, maybe longer. and we are hearing the protection is about 62%. but think about it as a seat belt. it doesn't protect you against everything, but it protects you against a lot. it's a really smart way to go. >> and you're saying it begins to work just a couple of days after you get it.

full effect, two weeks, but it begins to work right away. >> reporter: that's right. >> okay, dr. richard besser, thank you so much. and now, we turn to a battle of the tech titans. today, facebook declared war on google, unveiling a new search engine. so, what will this do to our lives? abc's david wright gives us an exclusive behind the scenes look at their big announcement. >> reporter: today, facebook is getting even more personal, with a search engine tailor made for you. >> so, this is just some really neat stuff. this is one of the coolest things that i think that we've done in awhile. >> reporter: where as google searches everything on the public web, facebook has quietly built up a huge database. people voluntarily sharing their likes and dislikes. a billion people sharing 240 billion photos with a trillion connections between people. data you could browse before, one page at a time. now, you can search it by four main categories. people, photos, places and interests.

instead of searching the web for a movie, you can instantly survey your friends about whether they liked a movie. and it's not just your friends you can search. >> let's say i'm looking for a new restaurant. >> reporter: product manager kate o'neill showed us how a facebook search is different from a traditional web search. >> what i really care about, actually, is places, restaurants in los angeles, that people from los angeles go to. >> reporter: i can say first hand, that's a great spot. >> that's great to hear. >> reporter: company officials say the search tool will respect people's privacy, accessing only information people want to share publicly. one thing's for sure. it will mean new ways for millions to waste time. david wright, abc news, menlo park. and still ahead here, big news for walmart. the biggest retailer in the world, joining the push for made in america. we check some bags in the parking lot and tell you what walmart promises to change. mine was earned in djibouti, africa, 2004.

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as this may cause an unsafe drop in blood pressure. do not drink alcohol in excess with cialis. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or if you have any allergic reactions such as rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing, stop taking cialis and get medical help right away. ask your doctor about cialis for daily use and a 30-tablet free trial. and you've joined us as over the past year, "world news" has championed jobs in america and more products made and sold here. well, tonight, big news. walmart, such a big retailer, every move they make can change the retail economy, is signaling they're on board, announcing today they'll spend $50 billion over ten years on new products all made right here at home.

so, how many jobs could that be? our made in america captain is back, david muir, on the case. david? >> reporter: that's right, diane. walmart now the latest and largest retailer to say, in essence, wait a minute. while the math of making things overseas made a lot of sense, it doesn't always add up now. and economists arguing their move today was about far more than just p.r. tonight, walmart with that bold promise. buying an additional $50 billion in goods to sell, made in america over the next decade. it comes after years of criticism that walmart doesn't pay enough in wages and that the company sells too many products overseas. critics arguing that's how they keep their prices so low. we asked walmart shoppers to check the labels today. it didn't take long. maria small and her new blouse -- >> made in china. >> reporter: this couple and their new stool. >> made in china. >> reporter: but today, walmart u.s. was adamant, saying two-thirds of what it sells in america is sourced right here in america. and they're now promising more. maria, still searching that cart, did find something.

>> this one is made in the usa. >> reporter: and that promise of 50 billion more spent? >> they could spend that $50 billion the first year, they could create as much as 170,000 jobs in the united states. >> reporter: he says they'll likely spread that money out, over the next decade, but they'll still be creating thousands of jobs. and he says it's now a big name behind a big trend. >> only on in. >> reporter: thank you. companies suddenly arguing the math of manufacturing overseas doesn't always add up anymore. apple revealing some of its mac computers will soon say "made in america." global foundry, showing us those microchips, looking at factories in europe and asia, choosing upstate new york. and today, we heard about that slowly changing map from walmart. >> labor costs in asia are rising. oil and transportation costs are high. the equation is changing. >> reporter: but we wanted proof that walmart's promise will deliver. american companies weighing in tonight. coleman coolers pointing to 160 manufacturing jobs helped by their partnership with walmart already.

and 1880 mills outside atlanta georgia. they've been making towels for walmart overseas. telling us they've been asking walmart, why not a deal to make them here? tonight, the deal has been made. >> this is one of the towels walmart will have in store with our made here packaging on it. >> reporter: it says made in america? >> it does. >> reporter: towels made here, about to be shipped to your local walmart. 600 stores this spring and another 600 next fall? >> that's correct. >> reporter: in fact, she told me, up to 50 new jobs created because of this. and walmart promising something else today. it plans to hire some 100,000 u.s. veterans over five years, with support, of course, from the first lady tonight, who has chauped j e championed jobs for veterans returning from war. and diane, we were talking, the ceo of walmart served 25 years in the u.s. navy. in the navy reserve. >> so, they're going to hire every veteran who has been out for a year or less? >> reporter: a year or less, when they return, starting memorial day. >> a salute on that tonight.

thank you, david. and coming up next, why did president bill clinton say his wife will have another husband? or two? or three? it's simple physics... a body at rest tends to stay at rest... while a body in motion tends to stay in motion. staying active can actually ease arthritis symptoms. but if you have arthritis, staying active can be difficult. prescription celebrex can help relieve arthritis pain so your body can stay in motion. because just one 200mg celebrex a day can provide 24 hour relief for many with arthritis pain and inflammation. plus, in clinical studies, celebrex is proven to improve daily physical function so moving is easier. celebrex can be taken with or without food. and it's not a narcotic. you and your doctor should balance the benefits with the risks. all prescription nsaids, like celebrex, ibuprofen, naproxen and meloxicam have the same cardiovascular warning. they all may increase the chance of heart attack or stroke, which can lead to death. this chance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods.

nsaids, including celebrex, increase the chance of serious skin or allergic reactions or stomach and intestine problems, such as bleeding and ulcers, which can occur without warning and may cause death. patients also taking aspirin and the elderly are at increased risk for stomach bleeding and ulcers. do not take celebrex if you've had an asthma attack, hives, or other allergies to aspirin, nsaids or sulfonamides. get help right away if you have swelling of the face or throat, or trouble breathing. tell your doctor your medical history. and find an arthritis treatment for you. visit celebrex.com and ask your doctor about celebrex. for a body in motion. and his new boss told him two things -- cook what you love, and save your money. joe doesn't know it yet, but he'll work his way up from busser to waiter to chef before opening a restaurant specializing in fish and game from the great northwest. he'll start investing early, he'll find some good people to help guide him, and he'll set money aside from his first day of work to his last,

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120. and i always know that she's thinking about that, whenever i am stubborn about something, in her constant quest of my self-improvement, she refers to me as her first husband. >> he said hillary's recent health scare was only the second time she'd ever spent the night in the hospital. the first was when she gave birth to chelsea. and the master of riddles and codes is back. tom hanks, as you know, played robert langdon in the movie of "the da vinci code." and today, the author of "the da vinci code," dan brown, announced a new novel with a puzzle on his website. each clue revealing itself with a tweet from a fan. the title "inferno," as in dante's "inferno" with its nine circles of hell. the book will come out in may. and how about the new york skyline, in transition tonight. and take a look at this. sending a signal to the world,

from the site of the world trade center. today, that is the spire that will sit atop the new skyscraper there. two cranes carefully installing the 70-ton base today. and when all 408 feet of the spire are in place, one world trade center will stand 1,776 feet tall, for independence day 1776, making it the tallest skyscraper in the western hemisphere. and if you see something out there that starts you talking, tweet it to me, @dianesawyer, for our "instant index." and coming up here, your health. ♪ a horse is a horse ♪ of course of course >> did you know mr. ed might replace your doctor? and what if babe is protection from the flu? why they're all coming to your rescue tonight. tay tuned. rescue tonight. stay tuned. at a dry cleaner, we replaced people with a machine. what?

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finally tonight, half of us are sneezing and wheezing from colds and flu and the other half seem just fine, immune. well, it turns out there is a lot of research showing the best medicine for modern health could be as close as the barn. abc's sharyn alfonsi has been digging into the proof. ♪ >> reporter: the mcdonald family had a farm. and on that farm they have not one, not two, but nine children. eight boys, one brave girl, each the picture of health. why do you think your kids are so healthy? >> good genes. >> reporter: good genes help, but it turns out so do the chickens and even those slobbering pigs. it might seem counter-intuitive

to a country obsessed with anti-bacterial lotion, but those animals could be one of the reasons these kids are so healthy. do your parents ever say to you, don't touch that, it's dirty? >> yeah. only if it's really dirty. >> reporter: one study found families on farms are almost half as likely to have asthma and nearly four times less likely to have hay fever. and researchers say animals help kids grow antibodies to fight infections better. i got up close and personal with rosie. how much milk do you go through with nine kids? >> probably two gallons a day. >> reporter: two gallons a day? >> yeah. >> reporter: well, you better get another cow. but you don't need a pet cow. exposure to a family cat means a baby will have 6% fewer colds, coughs, ear infections. babies raised around dogs will have 31% fewer infections. researchers believe pets may help children's immune systems mature faster. ♪

and on the farm, the mcdonalds make their own music, too. improving memory, immunity and even muscle tone. keeping the family and their health in perfect harmony. ♪ sharyn alfonsi, abc news, romulus, new york. and we're always working for you at abcnews.com. "nightline" later at 12:35 a.m. eastern. its new time. and i'll see you again tomorrow tonight a gun buy back proves so pop rar, it's ran out of money in less than an hour. >> oakland takes a controversial step towards solving violent crime problem. how the death of a 16-year-old may have triggered the latest wave. >> vix day at pete's harbor, now it appears the sheriff may have to be called in as owners

of boats refuse to move out. >> you heard about the big reveal from facebook. how they would be pushing out other bayjséz area companies. >> here are just some of the guns turned in today during an ambitious four-county buy back program. tonight officials are rifling through budgets to keep the program going. good evening, i'm dan ashley. >> the program proved so successful, it ran out of money after just a couple hours. abc 7 news is live in novato tonight and in novato police departments are quiet now but this morning there was a line down the block. the district attorney in marin county said he had no idea how many people would show up, tonight he's been surprised. >> in marin city, people lined

up to trade their guns. >> i bought a rifle about 25 years old. >> i brought in an ak. >> this is a 22 rifle. just had been sitting around for years and years.